org.apache.lucene.store.LockReleaseFailedException: Cannot forcefully unlock a NativeFSLock which is held by another indexer component: D:\Demo\GC_Tomcat\liferay-portal-6.1.0-ce-ga1\data\lucene\0\write.lock

org.apache.lucene.store.LockReleaseFailedException: Cannot forcefully unlock a NativeFSLock which is held by another indexer component: D:\Demo\GC_Tomcat\liferay-portal-6.1.0-ce-ga1\data\lucene\0\write.lock